Mark CrawfordIn his first career as an exploration geologist, Mark Crawford spent 18 years prowling forests and deserts in search of gold and silver. Much of this time was spent in the Southeast, where he researched this book, discovering new materials and source that can only be found by driving up dirt roads and knocking on ancestral doors. Now writing full-time, Crawford is the author of four other books, including the Encyclopedia of the Mexican-American War. Read More Read Less